Question

How many grams are in 8.3 moles of CaCl2?

Answer 1

Answer:

$\Large \boxed{\sf 921.3 \ g}$

Explanation:

Use formula

$\displaystyle moles=\frac{mass}{M_r}$

$M_r=40+35.5 \times 2 = 111$

Solve for mass

$mass=8.3 \times 111=921.3$

Answer 2

Answer:

(8.3×40)+(8.3×71)

921.3grames